You can see three almost identical images below. Can you spot the odd one out from them?

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

What 5-letter word typed in all capital letters can be read the same upside down?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.